Calcium Sulphate is a naturally occurring mineral that can be found in various forms. Common synonyms for Calcium Sulphate include gypsum, anhydrite, and selenite. Gypsum is a hydrated form of Calcium Sulphate and is commonly used in construction as a building material. Anhydrite, on the other hand, is a dehydrated form of Calcium Sulphate that is often used as a drying agent or in the production of cement. Selenite is a form of Calcium Sulphate that is translucent and often found as a crystal in mineral deposits. Other synonyms for Calcium Sulphate include Plaster of Paris, Terra Alba, and Drierite. Calcium Sulphate has many uses, ranging from industrial applications to medical and pharmaceutical uses.